Bug Description

The documentation says that the default recursion method is "processlist,hosts", but this does not seem to be true.

The "cluster" recursion method also seems to be used.

This can be tested by running pt-table-checksum on:
- a 3 node PXC setup which uses MySQL Replication to replicate to another 3 node PXC setup.
- Then run pt-table-checksum against the node which has the master role in the MySQL Replication setup.

It might also die saying "these nodes are in another cluster:" if the slave's cluster name isn't the same as the master's cluster name. Since you can't send PTDEBUG output, could you double check it like "PTDEBUG=1 ... 2>&1 | grep MasterSlave" then look for a lines like: